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| author | Mauro Carvalho Chehab <mchehab@osg.samsung.com> | 2014-11-11 08:36:43 -0200 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@osg.samsung.com> | 2014-11-11 08:37:35 -0200 |
| commit | 47a09af68ba50695c46511b8ed7f036d249bba48 (patch) | |
| tree | 051c4b70501a9f360729ecc9a9493a2f8ba33b6f /drivers/staging/android/logger.c | |
| parent | a23547374215422017239af32094e1aacc5d435e (diff) | |
| parent | 206c5f60a3d902bc4b56dab2de3e88de5eb06108 (diff) | |
| download | linux-47a09af68ba50695c46511b8ed7f036d249bba48.tar.gz linux-47a09af68ba50695c46511b8ed7f036d249bba48.tar.bz2 linux-47a09af68ba50695c46511b8ed7f036d249bba48.zip | |
Merge tag 'v3.18-rc4' into patchwork
Needed due to some important regression fixes at RC core.
* commit 'v3.18-rc4': (587 commits)
Linux 3.18-rc4
ARM: dts: zynq: Enable PL clocks for Parallella
tiny: rename ENABLE_DEV_COREDUMP to ALLOW_DEV_COREDUMP
tiny: reverse logic for DISABLE_DEV_COREDUMP
i2c: core: Dispose OF IRQ mapping at client removal time
i2c: at91: don't account as iowait
i2c: remove FSF address
USB: Update default usb-storage delay_use value in kernel-parameters.txt
sysfs: driver core: Fix glue dir race condition by gdp_mutex
MIPS: Fix build with binutils 2.24.51+
xfs: track bulkstat progress by agino
xfs: bulkstat error handling is broken
xfs: bulkstat main loop logic is a mess
xfs: bulkstat chunk-formatter has issues
xfs: bulkstat chunk formatting cursor is broken
xfs: bulkstat btree walk doesn't terminate
mm: Fix comment before truncate_setsize()
USB: cdc-acm: add quirk for control-line state requests
tty: Fix pty master poll() after slave closes v2
MIPS: R3000: Fix debug output for Virtual page number
...
Conflicts:
drivers/media/rc/rc-main.c
Diffstat (limited to 'drivers/staging/android/logger.c')
| -rw-r--r-- | drivers/staging/android/logger.c | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/drivers/staging/android/logger.c b/drivers/staging/android/logger.c index 28b93d39a94e..a673ffa34aa3 100644 --- a/drivers/staging/android/logger.c +++ b/drivers/staging/android/logger.c @@ -420,7 +420,7 @@ static ssize_t logger_write_iter(struct kiocb *iocb, struct iov_iter *from) struct logger_log *log = file_get_log(iocb->ki_filp); struct logger_entry header; struct timespec now; - size_t len, count; + size_t len, count, w_off; count = min_t(size_t, iocb->ki_nbytes, LOGGER_ENTRY_MAX_PAYLOAD); @@ -452,11 +452,14 @@ static ssize_t logger_write_iter(struct kiocb *iocb, struct iov_iter *from) memcpy(log->buffer + log->w_off, &header, len); memcpy(log->buffer, (char *)&header + len, sizeof(header) - len); - len = min(count, log->size - log->w_off); + /* Work with a copy until we are ready to commit the whole entry */ + w_off = logger_offset(log, log->w_off + sizeof(struct logger_entry)); - if (copy_from_iter(log->buffer + log->w_off, len, from) != len) { + len = min(count, log->size - w_off); + + if (copy_from_iter(log->buffer + w_off, len, from) != len) { /* - * Note that by not updating w_off, this abandons the + * Note that by not updating log->w_off, this abandons the * portion of the new entry that *was* successfully * copied, just above. This is intentional to avoid * message corruption from missing fragments. @@ -470,7 +473,7 @@ static ssize_t logger_write_iter(struct kiocb *iocb, struct iov_iter *from) return -EFAULT; } - log->w_off = logger_offset(log, log->w_off + count); + log->w_off = logger_offset(log, w_off + count); mutex_unlock(&log->mutex); /* wake up any blocked readers */ |