[Devel] [PATCH:vz7] ext4: fix seek_data soft lookup on sparse files
Good fix requires optimal implementation of next_extent like it was
done in 14516bb or 2d90c160, but this makes patch huge, let's
just break the loop when necessery.
https://jira.sw.ru/browse/PSBM-55818
Signed-off-by: Dmitry Monakhov
---
fs/ext4/file.c | 12 +++-
1 file changed, 11 insertions(+), 1 deletion(-)
diff --git a/fs/ext4/file.c b/fs/ext4/file.c
index c63d937..167e262 100644
--- a/fs/ext4/file.c
+++ b/fs/ext4/file.c
@@ -612,7 +612,17 @@ static loff_t ext4_seek_data(struct file *file, loff_t
offset, loff_t maxsize)
if (unwritten)
break;
}
-
+ if (signal_pending(current)) {
+ mutex_unlock(&inode->i_mutex);
+ return -EINTR;
+ }
+ if (need_resched()) {
+ mutex_unlock(&inode->i_mutex);
+ cond_resched();
+ mutex_lock(&inode->i_mutex);
+ isize = inode->i_size;
+ end = isize >> blkbits;
+ }
last++;
dataoff = (loff_t)last << blkbits;
} while (last <= end);
--
2.9.3
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[Devel] [PATCH:vz7] ext4: fix seek_data soft lookup on sparse files
Good fix requires optimal implementation of next_extent like it was
done in 14516bb or 2d90c160, but this makes patch huge, let's
just break the loop when necessery.
https://jira.sw.ru/browse/PSBM-55818
Signed-off-by: Dmitry Monakhov
---
fs/ext4/file.c | 12 +++-
1 file changed, 11 insertions(+), 1 deletion(-)
diff --git a/fs/ext4/file.c b/fs/ext4/file.c
index c63d937..167e262 100644
--- a/fs/ext4/file.c
+++ b/fs/ext4/file.c
@@ -612,7 +612,17 @@ static loff_t ext4_seek_data(struct file *file, loff_t
offset, loff_t maxsize)
if (unwritten)
break;
}
-
+ if (signal_pending(current)) {
+ mutex_unlock(&inode->i_mutex);
+ return -EINTR;
+ }
+ if (need_resched()) {
+ mutex_unlock(&inode->i_mutex);
+ cond_resched();
+ mutex_lock(&inode->i_mutex);
+ isize = inode->i_size;
+ end = isize >> blkbits;
+ }
last++;
dataoff = (loff_t)last << blkbits;
} while (last <= end);
--
2.9.3
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